Beyond task response—Pre-stimulus activity modulates contents of consciousness

Physics of Life Reviews, Год журнала: 2024, Номер 49, С. 19 - 37

Опубликована: Март 4, 2024

Язык: Английский

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Overcoming the translational crisis of contemporary psychiatry – converging phenomenological and spatiotemporal psychopathology

Molecular Psychiatry, Год журнала: 2023, Номер 28(11), С. 4492 - 4499

Опубликована: Сен. 13, 2023

Abstract Despite all neurobiological/neurocomputational progress in psychiatric research, recent authors speak about a ‘crisis of contemporary psychiatry’. Some argue that we do not yet know the computational mechanisms underlying psychopathological symptoms (‘crisis mechanism’) while others diagnose neglect subjectivity, namely first-person experience subjectivity’). In this perspective, propose Phenomenological Psychopathology, due to its focus on space and time, is an ideal position address crisis subjectivity and, if extended brain’s spatiotemporal topographic-dynamic structure as key Spatiotemporal mechanism. We demonstrate how experiences time differ between schizophrenia, mood disorders anxiety allowing for their differential-diagnosis – addresses subjectivity. Presupposing shared features brain, experience, “common currency”, abnormal may also serve template neuro-computational Preliminary scientific evidence our examples bipolar disorder, depression support such clinically relevant determination both (crisis subjectivity) mechanism). conclusion, converging Psychopathology with might help overcome translational psychiatry by delineating more fine-grained neuro -phenomenal mechanisms; offers novel candidate biomarkers diagnosis therapy including pharmacological non-pharmacological treatment.

Язык: Английский

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Intrinsic timescales and predictive allostatic interoception in brain health and disease

Neuroscience & Biobehavioral Reviews, Год журнала: 2023, Номер 157, С. 105510 - 105510

Опубликована: Дек. 15, 2023

The cognitive neuroscience of brain diseases faces challenges in understanding the complex relationship between structure and function, heterogeneity phenotypes, lack dimensional transnosological explanations. This perspective offers a framework combining predictive coding theory allostatic interoceptive overload (PAIO) intrinsic neural timescales (INT) to provide more dynamic health psychiatry neurology. PAIO integrates allostasis interoception assess interaction internal patterns environmental stressors, while INT shows that different regions operate on timescales. can be understood as failure INT, which involves breakdown proper temporal integration segregation. lead disbalances exteroceptive/interoceptive inputs across whole-body levels (cardiometabolic, cardiovascular, inflammatory, immune). approach new insights, presenting novel perspectives spatiotemporal hierarchies interactions. By integrating these theories, paper opens innovative paths for studying dynamics, inform future research disease.

Язык: Английский

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A measure centrality index for systematic empirical comparison of consciousness theories

Neuroscience & Biobehavioral Reviews, Год журнала: 2024, Номер 161, С. 105670 - 105670

Опубликована: Апрель 12, 2024

Consciousness science is marred by disparate constructs and methodologies, making it challenging to systematically compare theories. This foundational crisis casts doubts on the scientific character of field itself. Addressing it, we propose a framework for comparing consciousness theories introducing novel inter-theory classification interface, Measure Centrality Index (MCI). Recognizing its gradient distribution, MCI assesses degree importance specific empirical measure has given theory. We apply probe how measures Global Neuronal Workspace Theory (GNW), Integrated Information (IIT), Temporospatial (TTC) would fare within context other two. demonstrate that direct comparison IIT, GNW, TTC meaningful valid some like Lempel-Ziv Complexity (LZC), Autocorrelation Window (ACW), possibly Mutual (MI). In contrast, problematic others anatomical physiological neural correlates (NCC) due their MCI-based differential weightings structure sum, introduce provide proof-of-principle systematic method comparisons, thereby addressing isolated evolution confirmatory bias issues in state-of-the-art neuroscience consciousness.

Язык: Английский

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Common Currency Theory – Connecting neural and mental features through temporo-spatial dynamics

Physics of Life Reviews, Год журнала: 2024, Номер 52, С. 29 - 43

Опубликована: Ноя. 21, 2024

Despite major progress in our understanding of the brain, connection neural and mental features, that is, brain mind, remains yet elusive. In 2020 target paper ("Is temporospatial dynamics 'common currency' mind? Spatiotemporal Neuroscience") we proposed "Common currency hypothesis": temporo-spatial are shared by providing their connection. The current aims to further support extend original description such common into a first outline theory" (CCT) neuro-mental relationship. First, range examples thoughts, meditation, depression attention all lending temporal characteristics, (i.e. dynamics) both features. Second, now also show empirical how spatial i.e., topography, features; this is illustrated topographic reorganization states meditation. Third, considering theoretical terms, specify relationship distinct forms correspondences, ranging on continuum from simple complex. conclusion, initial hypothesis about key role an integrated mind-brain theory, (CCT).

Язык: Английский

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Intrinsic neural timescales exhibit different lengths in distinct meditation techniques

NeuroImage, Год журнала: 2024, Номер 297, С. 120745 - 120745

Опубликована: Июль 27, 2024

Meditation encompasses a range of practices employing diverse induction techniques, each characterized by distinct attentional focus. In Mantra meditation, for instance, practitioners direct their attention narrowly to given sentence that is recursively repeated, while other forms meditation such as Shoonya are induced wider Here we aimed identify the neural underpinnings and correlates associated with this spectrum foci. To accomplish this, used EEG data estimate brain's intrinsic timescales (INTs), is, its temporal windows activity, calculating Autocorrelation Window (ACW) signal. The autocorrelation function measures similarity timeseries time-lagged version itself correlating signal on different time lags, consequently providing an estimation INTs length. Therefore, through using ACW metric, our objective was explore whether there correspondence between length activity width scope during various techniques. This performed three groups highly proficient belonging traditions, well meditation-naïve control group. Our results indicated focus, like exhibit longer durations compared requiring narrower or body-scanning Vipassana meditation. Together, demonstrated techniques varying widths foci unique in INTs. may suggest relates corresponds activity. research uncovered mechanisms underpin We revealed featured widths, lengths (INTs) within brain, measured function. finding bridge gap (subjective) (objective) offering new understanding how cognitive processes related other. work holds significant implications, especially context increasing use mental health well-being interventions. By elucidating foundations aims pave way developing more tailored effective meditation-based treatments.

Язык: Английский

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The self and our perception of its synchrony – Beyond internal and external cognition

Consciousness and Cognition, Год журнала: 2023, Номер 116, С. 103600 - 103600

Опубликована: Ноя. 1, 2023

The self is the core of our mental life which connects one's inner with external perception. Since synchrony a key feature biological world and its various species, what role does it play for humans? We conducted large-scale psychological study (n = 1072) combining newly developed visual analogue scales (VAS) perception internal cognition complemented by several questionnaires. Overall, findings showed close connection both (i.e., body cognition) others, environment/nature) being associated positively adaptive negatively maladaptive traits self. Moreover, we have demonstrated how events like COVID-19 pandemic) variables modulate self's internal-external synchrony. These suggest plays central during times uncertainty.

Язык: Английский

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The Balanced Mind and its Intrinsic Neural Timescales in Advanced Meditators

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Авг. 30, 2024

Abstract A balanced mind, or equanimity, cultivated through meditation and other spiritual practices, is considered one of the highest mental states. Its core features include deidentification non-duality. Despite its significance, neural correlates remain unknown. To address this, we acquired 128-channel EEG data (n = 103) from advanced novice meditators (from Isha Yoga tradition) controls during an internal attention (breath-watching) external task (visual-oddball paradigm). We calculated auto-correlation window (ACW), a measure brain’s intrinsic timescales (INTs) assessed equanimity self-report questionnaires. Advanced showed higher levels shorter duration INTs (shorter ACW) breath-watching, indicating with contents. Furthermore, they demonstrated no significant differences in between tasks, non-dual awareness. Finally, correlated participants’ subjective perceptions equanimity. In conclusion, show that INT may serve as marker

Язык: Английский

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Altered spatiotemporal brain dynamics of interoception in behavioural-variant frontotemporal dementia

EBioMedicine, Год журнала: 2025, Номер 113, С. 105614 - 105614

Опубликована: Фев. 22, 2025

Язык: Английский

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Test–retest reliability of resting-state EEG intrinsic neural timescales

Cerebral Cortex, Год журнала: 2025, Номер 35(2)

Опубликована: Фев. 1, 2025

Abstract Intrinsic neural timescales, which reflect the duration of information storage within local brain regions and capacity for integration, are typically measured using autocorrelation windows (ACWs). Extraction intrinsic timescales from resting-state activity has been extensively applied in psychiatric disease research. Given potential as a marker disorders, investigating their reliability is crucial. This study, an open-source database, aimed to evaluate test–retest ACW-0 ACW-50 under both eyes-open eyes-closed conditions across three sessions. The intraclass correlation coefficients (ICCs) were employed quantify timescales. Our results showed that exhibited good (ICC > 0.6) at whole-brain level different index types eye states. Spatially, except right temporal region condition, all other moderate-to-high ICCs. Over 60% electrodes demonstrated timescale ICCs conditions, with being more stable than ACW-50. Moreover, new dataset, above consistently reproduced. present study comprehensively assessed various providing robust evidence stability neuroscience psychiatry.

Язык: Английский

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